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lJesarn eRooKEs, or sfrgLoUrs,V MI's'seURI.` Leners Patent No. 66,304, daad Juzg 2, A1867.

IMPRQVEMENT IN swAeEs ros Ursrrrrue SAW-Tram.

IO ALL WHOM IT MAY GONCERN:

Be it known that I, JosEPn OnooKEs, of the cityV and county of'St. Louis, and State of Missouri, have invented a new and useful Upsetting Tool for Upsetting Saw-Teeth; and I do hereby declare that the following is a full -and clear description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon. l

The nature of this invention will be clearly understood .by reference te thc accompanying drawings, of which- Figure 1 is an end plan, and

Figure 2 is aside elevation. Y

To enable those skilled in the art to make and use my improved tool, I will proceed to describe its construction and operation. 4

A isithc handle of the instrument, and one end of this same piece is enlarged intoV a head, A1. Through thcsaidhead Al a circular hole is bored to receive `the-dies B B', the two dies toffether formino a erfcct c 1ina D P y der, with the exception of" the triangular groove b, which is formed by bevclling oif two adjacent corners of the said dies, and the groove s'eformed should be fixed in the front part ol' the die when it is placed in the head Al, and the dividing line b1,`betwcen the two pieces B B', should coincide with the axial line of the handle, prolonged through the'head part ofit. The two dies B B may be held in position in the head Al by means ofthe set-screw b2. Ah orifice, A2, shown in plan in fig. I, and by the dotted lines in iig. 2, is made in the forward end of the head A, so as to admit the end of the tooth to bo operated upon to contact with the dies. I

I ain aware that dies have been inserted in the ends of handles before now, for this same purpose, but the 4e.\:cessive wcdging or splitting action toA which they were snbjcctcd'while in' use has produced not only the destruction of the die, but also of its handle. This destructivc'featuro of the aforesaid instrumentsI is wholly obviated in the present invention by boring the hole for the dies directly through the solid metal of the head, and thus .leaving the metal' parts a a to act, as it were, as bands' aroimd the dies, to prevent such bursting or splitting tendency during use. A detail section of the head more clearly shows the construction of the orifice A2 and the parts a a. A i

One great advantage of the instrument constructed as above described is that the parts are circular, and hence may bc perfectly ttcd in a lathe. The advantage of the construction of the dies B B' in two p'icces is, thatthe sharpedge of the saw-tooth will pass down into the line bl, and thereby be prevented from becoming dull in the upsetting operation. l i

I am aware that in the Letters Patent granted J. E. Emerson, cylindrical dies are shown, these being seated or xcd in the tool-end of a die-stock, and'that, moreover, split dies have been used and described, as in the Letters Patent to A. F. Stone. I therefore in nowise claim' the forms or arrangements thus shown in prior use; but what I do claim, and desire to secure by Letters Patent, is- V Y The dic-stock A, having the mort-isos for setting the die B B transversely in the stock, and the passage A, when arranged and combined with the split die B '13', Subtantially as set forth. V

JOsEPH eRooKEs.

` Witnesses:

S M. RANDOLPH, CnAs. H. Bour, 

